In this case, identifier is "eth_pcap0,iface=eth0".
This identifier format is the same as "--vdev" format of DPDK applications.
+For example, to re-attach a bonded port which has been previously detached,
+the mode and slave parameters must be given.
+
+.. code-block:: console
+
+ testpmd> port attach eth_bond_testpmd_0,mode=0,slave=1
+ Attaching a new port...
+ EAL: Initializing pmd_bond for eth_bond_testpmd_0
+ EAL: Create bonded device eth_bond_testpmd_0 on port 0 in mode 0 on socket 0.
+ Port 0 is attached. Now total ports is 1
+ Done
+
+
port detach
~~~~~~~~~~~